We show that firms intermediating trade have incentives to overinvest in financial expertise, and that these investments can be destabilizing. Financial expertise in our model improves firms' ability to accurately estimate value when trading a security. It creates adverse selection, which under...

Build America Bonds (BABs) were issued by states and municipalities for twenty months as an alternative to tax-exempt bonds. The program was part of the 2009 fi scal stimulus package. The bonds are taxable to the holder, but the federal Treasury rebates 35% of the coupon payment to the issuer....